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JSON: S-expressions of the web
XML supposed to be S-expressions of the web.
JSON: S-expression simplicity regained
From instigator of ES3.1 simplification.
Cross origin requests (XHR2,XDR) coming.
How to obtain remote data?
Today: Can parse quickly or safely, choose one
JSONP → script tag → full vulnerability
json2.js → regex guarded eval, thin ice
json_sans_eval → best compromise today